Advanced High Energy AA batteries are specifically engineered for powering up your high-drain devices such as digital cameras MP3 players video game controllers and high-powered toys. They maximize performance and keep your devices running longer. Long-lasting power sources are ideal for daily usage. Mercury-free manufacturing helps minimize their environmental footprint. With Ready Power technology batteries hold their power up to 10 years. This technology helps control the internal stability of the battery with improved electrolyte utilization refined corrosion inhibitors and ultra-pure materials for long-term stability. The battery closure offers a tight seal for maximum reliability.